Then we need to read the command set to know how to load a message, how to send, how to receive etc etc. It is indeed very messy. Bed time. So I […]
Buzzer not working, back EMF etc
(1) https://www.raspberrypi.org/forums/viewtopic.php?f=91&t=224976&hilit=buzzer+tlfong01&start=50#p1402122, (2) https://www.raspberrypi.org/forums/viewtopic.php?f=91&t=224976&p=1407253&hilit=buzzer+tlfong01#p1407253, (3) https://raspberrypi.stackexchange.com/questions/97980/active-piezo-buzzer-makes-sound-on-both-rpi-gpio-low-and-high-level-signal, (4) https://raspberrypi.stackexchange.com/questions/104573/piezo-buzzer-driven-by-rpi-gpio-problem, (5) https://raspberrypi.stackexchange.com/questions/103868/piezo-sensor-to-pick-up-acoustic-instrument-signal-using-rpi-and-adc. Is it fine to power a buzzer that requires only 3V using the 3V3 pin of the Raspberry Pi 3 B+ Ask […]
Rpi4B J2 problem
Why doesn’t the RPi 4 power on when RUN pin is grounded? Ask Question Asked 7 months ago Active 4 months ago Viewed 3k times 3 I’m trying to power on a RPi 4 using […]